Members of the Big Bang Theory use a 3D printer to turn themselves into action figures.

3D printed top by Iris van Herpen, with architect Daniel Widrig and .MGX - "Crystallization" collection preview at Amsterdam Fashion Week SS11

Math in Mobiles

3D Printed mobiles by Shapeways Mobiles
http://www.shapeways.com/blog/archives/2061-The-Beautiful-Math-of-3D-Printed-Mobiles.html

Printed Topography

3D printed chess set

Printed "Taxidermy"

Artists Linlin and Pierre-Yves Jacques create 3D printed animal busts with intricate lace patterns.
http://www.trendhunter.com/trends/animal-lace

Prosthetics

Scott Summit and Kenneth B. Trauner at Bespoke Innovations build and sell custom designed 3D printed prosthesis.
http://www.makepartsfast.com/2010/12/1011/3d-printers-deliver-competitive-alternative-to-traditional-prosthetic-limbs/.

Ceramics

http://unfold.be/pages/projects/items/stratigraphic-porcelain/3d%20printing/date

3D ceramics produced by the Unfold design studio with a ceramic printer.

3D Printed Cat